Abrading-cylinder.



P. L. LANE.

ABRADING CYLINDER. APPLmA'noN FILED un.. '1. 1910.

Patented July 2, 1912.

FRANKLIN LANE, OF BELOIT, WISCONSIN, ASSIGNOR 4TO THE BERLIN MACHINE WORKS, OF BELOIT, WISCONSIN, A 'CORPORATION OF`-WISCN SIN.

ABRADING- CYLINDER.

Specification of Letters Patent.

Patented July 2, 1912.

Application filed March 7, 1910. Serial No. 547,679.

To allv whom it may concern:

Be it known that I, FRANkLrN L. LANE, a citizen of the United States, residing at Beloit, in the county of Rock and- State of lfisconsin, have invented certain new and useful Improvements Ain Abrading-Cylinders, of which the following is a specilication.

My invention relates to abrading cylinders and has special reference to a regulating mechanism for adjusting the clamping disks placed at each end of the abrading cylinder.

In Patent No. 577,582, issued vFeb. 23, 1897, to F. L. Lane and J. Mitchell, a form of abrading cylinder was disclosed which has much the same general characteristics as the cylinder which is used in my present invention. It will be noticed however, that in the form of cylinder described in the above mentioned patent, the clampingdisks or rings are moved isimultaneously bysuitable mechanism and no provision is made for moving these disks independently of eachother. Vhen the-abrading materialin the form of sand-paper, emery cloth or the like is spirally wrapped around thecylindrical shell, the ends are attached to the clamping disks.

In order `to tighten the abrading material on the cylindrical shell, mechanism is provided by which these disks can be moved ina longitudinal direction away from the cylindricalv shell. It is evident that if the two clamping disks are moved in a straight longitudinal direction, the abrading material would be somewhat wrinkled by such movement inasmuch as the same is wrapped or wound about the cylindrical shell in a spiral manner. Each disk is provided with a slotted lug projecting inwardly toward the main cylindrical shell, the slot in this lug engaging a pin mounted-on the inside of the cylinder. I preferably form this slot in an oblique directionl so that the two disks. when being moved in a longitudinal direction are at the same time rotated to give the proper pressure on the abrading material and prevent vthe samefromabecoming wrinkled. This general system of ,'o eration whlch I have just described. is discldsed'in the above mentioned patent, but as.- previously stated, no provision is made bywhich the two clamping disks can be rmoved independently of each other. Inasmuch .as it 1s. often desired to apply tension onthe abradmg mate- ,rial to a greater extent toward onelend of the cylinder than the other, I have found it `of very great advantage to use a mechanism for obtaining such an independent movement ofthe two" clamping disks. It is especially desirable to have such independent adjustment after the cylinder has been operated for some time as there isa strong tendency for the abrading material to becomc loose on the end of the cylinder toward which the spirally wound material is forced by the pressure of the object which is being abraded. It is the mechanism which attains this independent adjustment of the clamping disks which forms the subject matter of my present invention.

By reference to the above mentioned patent to Lane and Mitchell, it will be observed that the two clamping disks are operated by means of gears which have threaded engage# ment with the disks and that these gears are operated by means of pinions in mesh with the same, the t-wov plnions being rigidly mounted on a shaft. .In order tol cause the twol clamping disks to be moved in opposite longitudinal directions when the two gears associated therewith are rotated in the same direction, the pitch f the threads of the two gears is in opposite directions, that is, a left-hand thread is used in connection with one gear and a right-hand thread in connection with the other. Instead of having the two pinions` above mentioned rigidly mounted on their shaft,- as in the case of the plreviously mentioned patent, in my present 1n'- vention I have one pinion rigidly mounted on the shaft and thesecond pinion is loosely mounted thereon,'having threaded engage- -ment with the shaft and the parts are so -constructed that when the pinion is rotated or screwed into a predetermined position on the shaft, a shoulder or clutch member on the pinion engages asimilar coperating member on the shaft and thus if the pinion is rotated in one direction itwill simultaneously rotate the shaft, whereas if the shaft isv rotatedA in the opposite direction it will simultaneously rotate the pinion. The construction of the parts is such that, as will be described in detail hereafter, when the two clamping disks are in their normal positions nearest to the cylindrical shell, if the shaft on which the two pinions are mounted is rotated, the loosely mounted pinion is engaged by the clutch member on, the shaft and thus both pinions are rotated causing ond clamping n vits desired position.

Although'I have just described a somewhat specific embodiment of my invention,

. der, and many departures can the exact construction which is disclosed the fundamental object is to obtain an in dependent adjustment of the two clamping disks, such adjustment preferably being operable from one end of/ the abrading cylin-L herein without departing from the spirit of my invention.

A preferred is described in the accompanying in which, l

Figure 1is a plan view vof* the abrading cylinder with the disks in position. Fig. 2

embodiment of Amy invention drawings is an enlarged vertical longitudinal sectionl through thev ends of the cylinder and their Fig. 3 is an end elevation of the main cylinder. Fig. 4 is. an end elevation of one of the clamping disks. Fig. 5 is 'an enlarged perspective view of the loosely mounted adjusting pinion. Fig. 6 is an enlarged perspective view of the portion of the'shaft on which the adjusting pinion is mounted. Fig. V7 is an enlarged perspective view of the key which is adapted to operate the loosely mounted pinion.

On the cylindrical shell 11 is spirally wound the abrading material 12, the edges of which are lapped along the line of the spiral groove 13 in the shell 11. Near each end of the shell 11 is a cylinder head 14, having a hub 14a' through which the main shaft 15 passes. The cylinder heads 14 are located a sufficient distance from the ends of the cylinder shell to form recesses-for containing the various operating parts which willbe described hereafter.

A clamping disk or ring 16 is provided at each end of the cylindrical shell 11, and has a hub 17 which is mounted on the main associated parts.

operating shaft 15. The periphery of each clamping disk 16 is continuous with the periphery of the cylindrical shell 11. Loosely mounted on the outer portion of the hub 17 is a bell crank lever 18, which has the arm 19 with a slotted opening 20, the screw 21, inserted in the body of the clamping meinber 16, acting as a detent for the bell crank lever 18. The arm 19 is 'provided with av Gn theother hand, if it is desired shouldered end 22 which .is engaged by the hooked end 23 of the clamping band or strap 24, whicliencircles the clamping disk 16. A portion of the periphery of the disk 16 is cut away forming the opening 25 and the hooked end 26 attached to the Strap 24 is secured to the shoulder 27 on the periphery of the clamping ring 16.

A lug 28' is mounted on the clamping disk 16,;'and through this lug passes the set screw 29'which engages the portion 30 of the bell cra-iik lever 18. It is now evident that by adjusting the set screw 29, the tension of the clamping strap =24may be regulated as desired.

The portion of the hub 17 which lies to ward the cylindrical shell is provided with threads which engage similar threads on the inside of the sleeve portion 31 of the gear 32, this gear being mounted on the hub 14a of the cylinder head 14. The hub of the clamping disk on one end of the cylindrical shell is provided with left hand threads,

whereas that on the other end is provided with right-hand threads, in order. to cause movement of the clamping disks in opposite directions, as will be described hercafter. The headed screw 33 is mounted on the cylindrical head 14 and is for the purpose of prevent-ing longitudinal movement of the gear 32. t

Mounted within the cylindrical shell 11 and having its bearings Ain the cylinder heads 14-14, is the adjusting shaft' 34, on one end of which is rigidly mounted the pinion 35, in mesh with its corresponding gear 32.` Also rigidly mounted on the shaft 34 is the collar or clutch member 36 provided with the shoulder 37, which is adapted to engage the shoulder 38 of the pinion 39 which is loosely mounted on the shaft 34 and has threaded engagement therewith. This pinion 39 has a hub 40 with slots 41 adapted to frm engagement with the projections 42 on the key 43, which may be inserted through the'opening 44 in the lefthand clamping disk 16 as shown in Fig. 2. The left-hand end of the shaft 44 vis formed into a key stud 45 which may be engaged by a suitable key when the key 43 is withdrawn. Projecting inwardly from cach of the clampingdisks 16, is the lug 46 which has an oblique slot 47 engaging the pin 48 shell 11. Two of theselugs 46 vare preferably provided in connection with each clamping disk.

rmounted on the inner face of the cylindrical Having thus described the construction of the parts used in my invention, the 0peration of the saine may no w be readily understood: The abrading material 12 is fastened to the right-hand clamping disk 16 and is spirally` wound around the cylindrical shell 11, and is cut 0E so that its ends project over-the left hand end of the shell clamping disks are thereby given a partial ipsum? 11....The left-hand edges of the abrading` material which arethus formed are secured to the left-hand clamping disk 16, by means of the clamping strap or band 24.. Now let us assume that it is desired to move both of the clamping disks v16 outwardly in a longitudinal direction and at the same time partially rotate them, as is usually the case when the abrading material is first put on. A key is inserted through the opening'44 in the left-hand clamping disk 16, and engagesthe key stud 45, the key isvturned in a clockwise direction, the shaft 34 is rotated thereby and the shoulder 37 engages the shoulder 38 on the pinion 39. In this way both the pinion 39a-nd the pinion 35 are rotated, communicating their motion to the gears 32 which are rotated in a contra- `clockwise direction. The hubs 17 of the clamping disks 16 having threaded engage ment with the sleeve portions 31 of the gears 32,'both' of the clamping disks are forced outwardly being prevented from rotation with the gears 32 by means of the pins 48,

but being guided in their movement by these pins and if vthe slots 47 are oblique, the two rotation. If it is now desired to return these 'clamping disks to their original positions, the key engaging the keystud 45 is with-` drawn and the key 43 is inserted through the opening 44, and engagementis lformed with the pinion 39. This pinion is now rotated in a contra-clockwise direction and the shoulder 38 engages the shoulder 37 of the colla-r 36 and both the vpinions 39 and 35 are consequently rotated, and as will be readily understood, the clamping disks are returned to their original pos1tion. i'

After the abrading cylinder has been used for some time it may be desired to move the left-hand clamping disk 16 and to leave thev right-hand clamping disk stationary. The key'43 isengaged with-the pinion 39 and this pinion is rotated in a clockwise di-` rection, the shoulder 38 'leaving its engagement with. the shoulder 37 on the collar 36. The pinion 39 is graduallyl moved to the left by means -of its threaded engagement with the shaft 34 and the gear teeth of the pinion slide along onthe gear teeth of the gear 32 but remain in meshl therewith. After the left-handclamping disk 16 has been ad? justed'as desired, the right hand clamping disk may .be moved by withdrawing the key 43 and using the key which engages the key `the gear 32 with which lit is in mesh. .The "'.two clamping disks may be returned' to their ...original positions either independently 4by 'successively rotating the shaft 34 and the pinion 39 in a contra-.clockwise direction, or

of the two clamping disks will'be-simul-lJ taneous.

Having thus described mv invention what I'claim and .desire to cover by United States Letters Patent is:

1. In a device of the class described, the combination of a main cylindrical member having abrading material wound thereon, end members longitudinally movable with respect to said cylindrical member and to which said abrading material is attached, and means for moving said end members independently of each other and of the cylindrical member, the movement of said end membersfin a direction away from the said cylindrical member causing the tightening of the abrading material.

2. In a device of the class described, the combination of a main cylindrical member having abrading material woundv thereon,` end members 'longitudinally movable with respect to said cylindrical member and to which said abrading material is attached, and means for selectively moving said end of each other.

3. In a device of the class described, the'v 95 combination of a cylindrical shell having -abrading mateial wound thereon, alongitud-inally movable clamping disk at each end of said cylindrical shell-and to which said abrading material is secured, and means for moving said clamping disks inde endelntty of each other, and of the cylin ical s i 4. In an abrading cylinder, the combination of a cylindrical shell having abrading material wound thereon, a clamping disk at each end of said shell and' to which said abradin material is secured, a gear having ios threads engagementwith the hub of each of said clamping disks, a pinion in mesh with each of said gears,`means for limiting the rotation, of each clamping disk thereby causing longitudinal movement of the disk when its associated gear is rotated, and' means. for selectively rotatin said pinions either simultaneously or in ependently of each other. I 1

l5. In an abrading cylinder, the combination of acylindrical s ell having abrading material vwound lthereon,'a clamping disk at each end of said shell and to whichsaid abrading material is secured, a gear associated with each of said clamping disks and having threaded engagement therewith, a4 pinionin mesh with each' of said gears, al shaft on which oneof said'pinions isrotatably mounted and with which the second pinion has threaded engagement, and a clutch member on said vshaft adapted for engagement with said second pinion, said pining said members simultaneously orminde-V Vpendelrtly of each other.

7. In an'abrading cylinder, the combination of a clamping disk at'each'end of the cylinder, a rotatable", gear associated with each of said clamping and having threaded engagement" therewith, the pitch of the threads of said gears being in opposite directions .thereby causing said disks to be Ylongitudinally movedin opposite directions' when the said gears are rotated in the same direction, a shaft mounted'within said cylinder, a pinion rigidly mounted on said shaft and in mesh with one of said gears, and asecond pinin'looselymounted on said Shaft and in mesh with the other of said gears, said second pinion and said shaft adaptedto be rotated independently of each other.

8. In an 'abrading device, the combination of a main cylindrical member, a' clamping disk at each end of said member, a 4gear associated with each clamping disk and having threaded engagement therewith, a shaft mounted-Withinv said eylinder,"one end of the shaft formed into a key stud, a pinion rigidly mounted on said shaft and in mesh Y with one of said gears, and a second pinion having threaded engagement With'said shaft and in mesh with the second gear, said second pinion adapted to be engaged by a key and having a shoulder portion adapted toV engage a similar-Shoulder portion on Vsaid shaft when rotated to a predetermined position, said shaft and second pinion adapted for simultaneous rotation when saidfengagement is preserved and for independent rotation when said engagement is broken.

` A, FRANKLIN L. LANE.

'j' litnesses:

F. A. HOBSTMANN,

y L. A. Boss. 

